5. Google shows too many results from a single domain. If your query includes keywords associated with a site, Google may show up to 7 results from a domain. Google also lets you see other results from the same domain, but there are many duplicates.

6. If you restrict the results to visited pages and perform the same search using Google Web History, you'll get different results.

7. Sometimes personalization goes too far and replaces the top search result for a navigational query.